A place to learn how to check a financial claim.

Start with a question, finish with evidence

A company can report higher profit without collecting more cash. Revenue can barely move while the business mix changes substantially. A cash-flow measure can look different simply because one calculation includes lease principal and another does not.

Those are the kinds of problems this library helps you work through. The learning guides explain the method and include hypothetical exercises with worked answers. The filing notebooks apply a method to an exact historical SEC document. The research worksheet lets you record a source, reproduce a calculation, and write what the result does and does not establish.

Three examples of the approach

• Meta FY2024: reproduce the company's cash-flow definition before assessing its investment spending.
• NVIDIA FY2025: compare revenue, receivables, and operating cash without treating different measures as interchangeable.
• Tesla FY2024: reconcile a change in business mix beneath an almost-flat revenue total.

These are dated educational investigations, not continuously updated stock opinions. Their value is a calculation and a reading method you can reproduce.

Where automation fits

The company directory and reference tables use a scheduled SEC-data pipeline. It selects structured reported facts and links them to the source filing. It does not interview management, read every disclosure, or determine whether a stock is attractive. Missing or conflicting figures are omitted rather than borrowed from a different reporting period.

The methodology explains the selection rules. A daily reference refresh does not update the fixed-period notebooks or constitute an editorial review. The publishing and accountability page explains the distinction between automated reference data and maintained educational material. No unverified analyst credentials or professional assurance are implied.

Make the work easy to challenge

Source links belong beside the evidence. Units, dates, and definitions belong beside the figures. Hypothetical examples should be labeled as such. Interpretations should remain distinct from reported facts, including when a conclusion stays unresolved.

If something does not reconcile, contact Quantfil with the page URL, source location, and the disputed figure or statement. The corrections policy includes a record of material changes. You can also read the editorial standards, privacy policy, and disclaimer.

Quantfil provides informational education and analysis, not personalized investment, legal, or tax advice. Always verify consequential claims in the official SEC documents.